DEVICE FOR MEASURING ELECTROPHYSICAL PARAMETERS OF OIL AND ITS COMPONENTS Russian patent published in 2018 - IPC G01N27/02 

FIELD: electrical engineering.

SUBSTANCE: essence of the invention lies in the fact that the device for measuring the electrophysical parameters of oil and its components contains a sensor, which is a measuring cell filled with a diagnosed product and equipped with a temperature meter and two plane-parallel metal electrodes, as well as a generator of sinusoidal electrical signals, the output voltage of which is fed to one of the above-mentioned metal electrodes of the sensor, the generator of sinusoidal electrical signals is two-channel with the possibility of controlled phase shift of signals between channels, while the signal from the first output of the two-channel electrical signal generator is fed through the measuring cell with the diagnosed product and through the first current amplifier to the analog input of the first analog-to-digital converter, the output digital code of which is fed through the interface to the personal computer. In addition, the second output of said two-channel electrical signal generator is connected to a reference resistor, the signal from which goes to the second current amplifier, is amplified and then goes to the analog input of the second analog-to-digital converter, the output digital code of which is fed through the interface to the personal computer on the basis of which the virtual two-channel analyzer of signals is realized, while the digital signals fed to the PC are subjected to synchronous detection, where the output digital code from the second analog-to-digital converter is used as a reference signal. In addition, the active conductivity component is measured with zero phase shift of the signals at the outputs of the two-channel signal generator, and the measurement of the reactive component of the conductivity is carried out at a 90-degree phase shift of the signals at the outputs of the said generator.

EFFECT: device for measuring the frequency dependences of the total electrical conductivity, its active and reactive components for oil and its components, is proposed.

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